This is the XML-RPC library. XML-RPC is used instead of SOAP because it is far simpler and easier to use for most tasks. The library was implemented by Daniel Ehrenberg.

The most important words that this library implements are:
send-rpc ( rpc -- xml )

receive-rpc ( xml -- rpc )


data types in XML-RPC
base64

rpc-method

rpc-response

rpc-fault


the constructors for these are
<base64> ( string -- base64 )

<rpc-method> ( name params -- rpc-method )

<rpc-response> ( params -- rpc-response )

<rpc-fault> ( code string -- rpc-fault )


other words include
post-rpc ( rpc url -- rpc' )